Oxalis trilliifolia, commonly known as wood sorrel, is a perennial plant belonging to the Oxalidaceae family. Native to North America, it thrives in diverse habitats including woodlands, meadows, and rocky slopes. The plant typically reaches up to 30 cm in height and features green, trifoliate leaves with a heart-shaped base. These leaves are sensitive to light, folding up at night or on cloudy days.
The flowers of Oxalis trilliifolia are small, with five petals that range in color from white to pink or purple. They bloom from late spring through summer, arising on long stalks above the foliage. The plant produces small capsules containing seeds, which can be dispersed by wind or animals.
Historically, Native Americans have utilized wood sorrel for its medicinal properties, primarily due to its high vitamin C content, which helps prevent scurvy. However, it also contains oxalic acid, imparting a sour taste that can be toxic if consumed in large quantities.
Oxalis trilliifolia is a visually appealing addition to gardens due to its delicate foliage and vibrant flowers. However, it can become invasive if not properly managed, as it spreads through underground rhizomes.
How to keep Oxalis Trilliifolia.
Water
Threeleaf woodsorrel needs a moderate amount of water; however, be sure to avoid overwatering, which can lead to sogginess. Water the plant when the top inch of soil feels dry, making sure that the top two inches of soil stay moist. While rainwater is the best option, you can also use tap water as long as it is not too hard or too cold.
Fertilizer
Threeleaf woodsorrel is a light feeder and requires minimal fertilization if grown in balanced soil. Use a half-strength, all-purpose liquid fertilizer every couple of months, but avoid fertilizing during its winter dormancy. When repotting, mix in some organic compost to provide an extra boost during the sprouting period.
Pruning
Pruning Threeleaf woodsorrel in early spring helps it thrive by removing dead or damaged stems, promoting healthy growth and flowering. Light thinning improves air circulation and reduces the risk of disease. Avoid heavy pruning to prevent stunted growth and to preserve the plant's health and appearance.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Oxalis
- Family
- Oxalidaceae
Other names.
Reader questions.
What are the sunlight requirements for Threeleaf woodsorrel (Oxalis trilliifolia)?
Threeleaf woodsorrel (Oxalis trilliifolia) thrives in various sunlight conditions. For full sun exposure, it requires above 6 hours of sunlight daily. In partial sun conditions, it needs about 3-6 hours of sunlight. It's important to observe the movement of sunlight through your garden to find spots that offer the perfect balance of light and shade. This ensures your plants, including Threeleaf woodsorrel, remain happy and healthy.
